A reverse press-fitting mechanism

Abstract

The utility model discloses a reverse press equipment, this reverse press equipment includes electric cylinder upper fixed plate and electric cylinder lower fixed plate, and the electric cylinder upper fixed plate and electric cylinder lower fixed plate are connected through the two guide shafts of left and right symmetry between, and the guide plate is slidably arranged on the two guide shafts, and the electric cylinder lower fixed plate bottom is installed with the private electric cylinder, and the middle part of guide plate is provided with the connecting seat, and the bottom of connecting seat is connected with the axle end of private electric cylinder, and the upper end of connecting seat is connected with the lower push rod, and the lower push rod is set up through electric cylinder upper fixed plate upwards. The reverse press equipment is used for the upper top of the overpressure bushing in the shock absorber bushing press -pack process, makes the part of bushing overpressure and moves to the correct installation position, and improves the press -pack effect of bushing.

Description

Technical Field

[0001] This utility model relates to the field of bushing pressing, and more specifically, to a reverse pressing mechanism. Background Technology

[0002] The shock absorber is a core component of the car suspension system. It is a vibration damping device whose main function is to attenuate the vibration caused by road impact, improve ride comfort and handling safety. The ends of the car shock absorber need to be pressed into the hanging ring with rubber bushings and then subjected to flanging and riveting operations.

[0003] Patent CN209598620U discloses an automatic reverse push pressing device for rubber bushings, including a base, an electric cylinder mounting seat on the base, an electric cylinder on the electric cylinder mounting seat, a pressing shaft driven by the electric cylinder, a guide shaft connecting block for mounting the pressing shaft, a first guide shaft for mounting the guide shaft connecting block, and a guide positioning seat on the base for fixing metal parts. The base also has a reverse push cylinder mounting seat, which has a drive mechanism for reversing the movement of the guide positioning seat. A reverse push seat is provided between the guide positioning seat and the base, and the guide positioning seat is mounted on the reverse push seat. A lever is provided between the guide positioning seat and the drive mechanism, with the two ends of the lever located on both sides of the base. The drive mechanism realizes the reciprocating movement of the guide positioning seat by driving the lever.

[0004] The automatic reverse push-press device for rubber bushings uses a single electric cylinder mounting base. During operation, its first guide shaft moves vertically together with the guide shaft connecting block. Sufficient space needs to be reserved below the guide shaft connecting block to accommodate the movement of the first guide shaft. In actual operation, this can easily cause parts arranged in the space below to be pushed and damaged. Therefore, separate protective measures are required. Utility Model Content

[0005] The purpose of this utility model is to provide a reverse pressing mechanism. During the pressing process of the shock absorber bushing, the reverse pressing mechanism is used to push the over-pressed bushing upward, so that the over-pressed part of the bushing moves upward to the correct installation position, thereby improving the pressing effect of the bushing. In addition, the guide plate moves between the upper fixed plate and the lower fixed plate of the electric cylinder, and the position of the guide shaft is also fixed and will not move downward.

[0006] To achieve the above objectives, this utility model provides a reverse pressing mechanism, which includes an upper fixing plate and a lower fixing plate for an electric cylinder. The upper fixing plate and the lower fixing plate are connected by two symmetrical guide shafts. Guide plates are slidably mounted on the two guide shafts. A servo electric cylinder is installed at the bottom of the lower fixing plate. A connecting seat is provided in the middle of the guide plate. The bottom of the connecting seat is connected to the shaft end of the servo electric cylinder. A lower push rod is connected to the upper end of the connecting seat. The lower push rod extends upward through the upper fixing plate of the electric cylinder.

[0007] Preferably, bushings that slide with the guide shaft are provided at both ends of the guide plate.

[0008] Preferably, the lower end of the guide shaft is provided with a stud that extends downward from the lower fixing plate of the electric cylinder; the lower end of the stud is locked by a nut.

[0009] Preferably, the upper end of the push rod is provided with a frustum-shaped portion and a positioning rod.

[0010] Preferably, a large circular hole is provided on the fixing plate of the electric cylinder, and a water receiving sleeve is installed in the large circular hole.

[0011] Preferably, a stepped groove is provided on the upper edge of the large circular hole, and a first O-ring is embedded in the stepped groove.

[0012] Preferably, the connecting seat includes a convex shaft at the upper end that is inserted upward into the guide plate, and a connecting sleeve at the lower end; the shaft end of the electric cylinder is provided with a stud, a connector is sleeved on the stud, and a T-shaped socket is provided on the connecting sleeve; the upper end of the connector is provided with a T-shaped plug that can be inserted into the T-shaped socket.

[0013] Preferably, the upper end of the convex shaft is provided with a slot, and the lower end of the push rod is provided with a positioning pin that can be inserted into the slot; the side of the positioning pin is provided with a positioning pin hole, and the side of the convex shaft is provided with an indexing pin that can be inserted into the positioning pin hole.

[0014] Preferably, a water receiving tray is sleeved on the outside of the convex shaft near the guide plate, the water receiving tray is fixedly mounted on the guide plate by a plurality of first screws, and the connecting seat is mounted on the guide plate by a plurality of second screws.

[0015] Preferably, a second O-ring is provided on the inner edge of the water receiving tray.

[0016] According to the above technical solution, this utility model provides a reverse pressing mechanism, which includes an upper fixing plate and a lower fixing plate of an electric cylinder. The upper fixing plate and the lower fixing plate of the electric cylinder are connected by two left-right symmetrical guide shafts. Guide plates are slidably arranged on the two guide shafts. A servo electric cylinder is installed at the bottom of the lower fixing plate of the electric cylinder. A connecting seat is provided in the middle of the guide plate. The bottom of the connecting seat is connected to the shaft end of the servo electric cylinder. A lower push rod is connected to the upper end of the connecting seat. The lower push rod extends upward through the upper fixing plate of the electric cylinder.

[0017] The reverse pressing mechanism has the following advantages: 1. By setting an upper fixing plate and a lower fixing plate for the electric cylinder, the upper fixing plate is installed at the bottom of the die frame structure of the riveting machine, and the servo electric cylinder is installed at the bottom of the lower fixing plate. The servo electric cylinder pushes the lower push rod upward, which can push the over-pressed shock absorber bushing upward a certain distance, so that the over-pressed part of the shock absorber bushing can be moved to the correct installation position, thus improving the pressing effect of the bushing; 2. By setting a connecting seat in the middle of the guide plate, it is easy to connect with the shaft end of the corresponding servo electric cylinder and the lower push rod respectively, which facilitates assembly.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the reverse pressing mechanism;

[0021] Figure 2 This is a side view of a preferred embodiment of the reverse pressing mechanism;

[0022] Figure 3 This is a front view schematic diagram of a preferred embodiment of the reverse pressing mechanism;

[0023] Figure 4 yes Figure 3 A schematic diagram of the BB cross-sectional structure;

[0024] Figure 5 This is a schematic diagram of the overall assembly structure of the bushing press machine.

[0025] Explanation of reference numerals in the attached figures

[0026] 1- Riveting machine mold frame structure; 2- Riveting machine moving lower mold structure; 3- Bushing pressing mold assembly; 4- Flanging riveting mold assembly; 5- Guide pressing mold assembly; 6- Reverse pressing mechanism; 601- Electric cylinder upper fixing plate; 602- Guide shaft; 603- Electric cylinder lower fixing plate; 604- Nut; 605- Positioning rod; 606- Connector; 607- Connecting seat; 608- Guide plate; 609- Guide sleeve; 610- Lower push rod; 611- Indexing pin; 612- Water receiving sleeve; 613- First O-ring seal; 614- Second O-ring seal; 615- Water receiving tray; 616- Electric cylinder; 617- Stud; 618- T-type plug; 619- Positioning pin; 620- T-type socket; 7- Auxiliary support assembly; 8- Cylinder; 9- Front electric cylinder; 10- Rear electric cylinder. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0028] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0029] See Figure 1-4 The reverse pressing mechanism 6 shown includes an upper cylinder fixing plate 601 and a lower cylinder fixing plate 603. The upper cylinder fixing plate 601 and the lower cylinder fixing plate 603 are connected by two left-right symmetrical guide shafts 602. Guide plates 608 are slidably arranged on the two guide shafts 602. A servo cylinder 616 is installed at the bottom of the lower cylinder fixing plate 603. A connecting seat 607 is provided in the middle of the guide plate 608. The bottom of the connecting seat 607 is connected to the shaft end of the servo cylinder 616. A lower push rod 610 is connected to the upper end of the connecting seat 607. The lower push rod 610 extends upward through the upper cylinder fixing plate 601.

[0030] refer to Figure 5The assembly drawing of the bushing press-fitting machine shown illustrates the overall workflow of the machine: In the assembly structure, the movable lower die structure is mounted on a linear slide rail via multiple connecting sliders. A cylinder 8 is mounted on the cylinder 8 mounting plate, connecting to the movable lower die structure and enabling it to switch between the bushing press-fitting station and the riveting station. The guide die assembly 5 is a portal-shaped structure, spanning above the bushing press-fitting station. Guide rods on both sides slide and extend within corresponding bushings. The movable lower die structure has a lower die groove for positioning the workpiece, and the guide die assembly 5 has a corresponding upper die groove for positioning the workpiece. After the guide die assembly 5 moves downwards, the lower die groove and the upper die groove can close together. The workpiece is positioned within the mold, and the bushing to be pressed is placed into the positioning through hole on the upper mold groove to complete the preparation work. Then, the front electric cylinder 9 pushes the bushing pressing mold assembly 3 to slide downward, and the corresponding pressure rod presses the bushing into the workpiece. Since the flange at the bottom of the bushing needs to be pressed below the hole in the workpiece, the upper end of the bushing needs to be overpressed. After overpressing the bushing, the upper top shaft on the reverse pressing mechanism 6 is used to push the overpressed bushing back to the normal position, so that the upper flange of the bushing is pressed out. Finally, the cylinder 8 pulls the lower mold structure to move the lower mold structure to the riveting station, and the rear electric cylinder 10 pushes the flange riveting mold assembly 4 to slide downward for riveting. When the workpiece is an automotive shock absorber, the main body of the automotive shock absorber is supported by the installed auxiliary support assembly 7, and the lifting ring of the automotive shock absorber is positioned between the upper and lower mold grooves.

[0031] Therefore, the reverse pressing mechanism 6, by setting an upper fixing plate 601 and a lower fixing plate 603 for the electric cylinder, installs the upper fixing plate 601 at the bottom of the pressing and riveting machine mold frame structure 1, and installs the servo electric cylinder 616 at the bottom of the lower fixing plate 603. By using the servo electric cylinder 616 to push the lower push rod 610 upward, the over-pressed shock absorber bushing can be pushed up a certain distance, so that the over-pressed part of the shock absorber bushing can be moved to the correct installation position, improving the pressing effect of the bushing. A connecting seat 607 is set in the middle of the guide plate 608, which facilitates connection with the shaft end of the corresponding servo electric cylinder 616 and the lower push rod 610, respectively, which facilitates assembly.

[0032] In this embodiment, guide sleeves 609 are provided at both ends of the guide plate 608, which slide and engage with the guide shaft 602. This arrangement enhances the sliding effect between the guide plate 608 and the guide shaft 602.

[0033] In this embodiment, the lower end of the guide shaft 602 is provided with a stud 617 extending downward from the lower fixing plate 603 of the electric cylinder; the lower end of the stud 617 is locked by a nut 604. This arrangement facilitates a detachable connection between the lower fixing plate 603 of the electric cylinder and the guide shaft 602.

[0034] In this embodiment, the upper end of the push rod 610 is provided with a frustoconical portion and a positioning rod 605. When the bushing is pushed upward, the side of the frustoconical portion contacts the bottom of the bushing, and the positioning rod 605 is inserted into the bushing to perform a positioning function.

[0035] In this embodiment, a large circular hole is provided on the upper fixing plate 601 of the electric cylinder, and a water receiving sleeve 612 is installed in the large circular hole. Since the bushing needs to be soaked in water or a special liquid before pressing, the water receiving sleeve 612 is used to catch the liquid dripping from the bushing during the pressing process.

[0036] In this embodiment, in order to further enhance the sealing effect, a stepped groove is provided on the upper edge of the large circular hole, and a first O-ring 613 is embedded in the stepped groove.

[0037] In this embodiment, the connecting seat 607 includes a convex shaft at its upper end for inserting upwards into the guide plate 608, and a connecting sleeve at its lower end; the shaft end of the servo cylinder 616 is provided with a stud 617, a connector 606 is sleeved on the stud 617, and a T-shaped socket 620 is provided on the connecting sleeve; the upper end of the connector 606 is provided with a T-shaped plug 618 that can be inserted into the T-shaped socket 620. During assembly, the connector 606 is first installed onto the shaft end of the servo cylinder 616, and then the T-shaped plug 618 is inserted into the T-shaped socket 620 to achieve quick connection.

[0038] In this embodiment, the upper end of the convex shaft is provided with a slot, and the lower end of the lower push rod 610 is provided with a positioning pin 619 for insertion into the slot; the side of the positioning pin 619 is provided with a positioning pin hole, and the side of the convex shaft is provided with an indexing pin 611 that can be inserted into the positioning pin hole. When assembling the lower push rod 610, the positioning pin 619 at the lower end of the lower push rod 610 is inserted into the slot, and then pinned in the positioning pin hole by the indexing pin 611 provided on the side.

[0039] In this embodiment, a water receiving tray 615 is fitted around the outer side of the convex shaft near the guide plate 608. The water receiving tray 615 is fixedly mounted on the guide plate 608 by a plurality of first screws, and the connecting seat 607 is mounted on the guide plate 608 around its perimeter by a plurality of second screws. This arrangement further facilitates the collection of overflowing liquid by the water receiving tray 615, and the plurality of second screws are installed from bottom to top into corresponding screw holes on the guide plate 608.

[0040] In this embodiment, a second O-ring 614 is provided on the inner edge of the water receiving tray 615. The second O-ring 614 forms a seal with the outer side of the convex shaft, thereby increasing the sealing effect.

[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0043] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A reverse pressing mechanism, characterized in that, The reverse pressing mechanism (6) includes an upper fixing plate (601) and a lower fixing plate (603) for the electric cylinder. The upper fixing plate (601) and the lower fixing plate (603) are connected by two left-right symmetrical guide shafts (602). Guide plates (608) are slidably arranged on the two guide shafts (602). A servo electric cylinder (616) is installed at the bottom of the lower fixing plate (603). A connecting seat (607) is provided in the middle of the guide plate (608). The bottom of the connecting seat (607) is connected to the shaft end of the servo electric cylinder (616). A lower push rod (610) is connected to the upper end of the connecting seat (607). The lower push rod (610) extends upward through the upper fixing plate (601) for the electric cylinder.

2. The reverse pressing mechanism according to claim 1, characterized in that, The guide plate (608) has guide sleeves (609) at both ends that slide with the guide shaft (602).

3. The reverse pressing mechanism according to claim 1, characterized in that, The lower end of the guide shaft (602) is provided with a stud (617) that extends downward from the lower fixing plate (603) of the electric cylinder; The lower end of the stud (617) is locked by a nut (604).

4. The reverse pressing mechanism according to claim 1, characterized in that, The upper end of the push rod (610) is provided with a frustoconical part and a positioning rod (605).

5. The reverse pressing mechanism according to claim 4, characterized in that, The upper fixing plate (601) of the electric cylinder is provided with a large round hole, and a water receiving sleeve (612) is installed in the large round hole.

6. The reverse pressing mechanism according to claim 5, characterized in that, A stepped groove is provided on the upper edge of the large circular hole, and a first O-ring (613) is embedded in the stepped groove.

7. The reverse pressing mechanism according to claim 1, characterized in that, The connecting seat (607) includes a convex shaft at its upper end that is inserted upward into the guide plate (608), and a connecting sleeve at its lower end; The servo electric cylinder (616) has a stud (617) at its shaft end, a connector (606) is sleeved on the stud (617), and a T-shaped socket (620) is provided on the connector. The connector (606) is provided with a T-shaped plug (618) at its upper end, which can be inserted into the T-shaped socket (620).

8. The reverse pressing mechanism according to claim 7, characterized in that, The upper end of the convex shaft is provided with a slot, and the lower end of the push rod (610) is provided with a positioning pin (619) that can be inserted into the slot; the side of the positioning pin (619) is provided with a positioning pin hole, and the side of the convex shaft is provided with an indexing pin (611) that can be inserted into the positioning pin hole.

9. The reverse pressing mechanism according to claim 7, characterized in that, A water receiving tray (615) is sleeved on the outside of the convex shaft near the guide plate (608). The water receiving tray (615) is fixedly installed on the guide plate (608) by a plurality of first screws. The connecting seat (607) is installed on the guide plate (608) around the shaft by a plurality of second screws.

10. The reverse pressing mechanism according to claim 9, characterized in that, The inner edge of the water receiving tray (615) is provided with a second O-ring (614).

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